CVE-2026-111490

Critical

Description

Insecure direct object reference (IDOR) vulnerability in the MatchPoint API, which relies on the `actingasuser` HTTP header without verifying the requester's authorization for the specified user. Manipulation of sequential identifiers allows access to personal, banking, and financial data, private messages, and QR codes for physical access, as well as the ability to modify third-party accounts, change passwords, impersonate users, and transfer virtual balances.

SeverityCritical

CVSS9.9

Exploit probability—

ProductMatchpoint

PublishedNov 5, 2026

First seenNov 5, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
TPC Software Matchpoint	Versions prior to latest one	—

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